chore(psalm): Update PHP version to 7.2

- Updated PHP version in the workflow file
- Changed php-version from '7.4' to '7.2'
- Ensured compatibility with the required extensions

.github/workflows/psalm.yml

@@ -16,7 +16,7 @@ jobs:
       - name: Setup PHP
         uses: shivammathur/setup-php@v2
         with:
-          php-version: '7.4'
+          php-version: '7.2'
           extensions: dom, curl, libxml, mbstring, zip, pcntl, pdo, sqlite, pdo_sqlite, bcmath, soap, intl, gd, exif, iconv, imagick
           coverage: none